
However upon further inspection I found this out... here's the zoomed in view:

That's right ladies and gentlemen, Mike Holmgren is wearing two belts. Two different belts. Not a hundred percent sure why (does Andy Reid wear 12 belts? God knows how many belts Charlie Weis wears), but this is photographic evidence that Holmgren does indeed wear two belts when he's on the sideline for the Seahawks.
Perhaps each belt signifies a win by the Seahawks the season? He wouldn't have to worry about getting another belt.